﻿/*
 * Copyright (c) <2012> <guangboo49@gmail.com>
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this 
 * software and associated documentation files (the "Software"), to deal in the Software 
 * without restriction, including without limitation the rights to use, copy, modify, merge, 
 * publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
 * to whom the Software is furnished to do so, subject to the following conditions: 
 * The above copyright notice and this permission notice shall be included in all copies or 
 * substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

using System;

namespace Optparse.Options {
    public class StringArgOption : ArgOptionBase<string> {
        public StringArgOption(string alias, string name, string desc, string helptext) : base(alias, name, desc, helptext) { }
        public StringArgOption(string alias, string name, string desc, string helptext, string defaultValue) : base(alias, name, desc, helptext, defaultValue) { }
        
        protected override bool Parse(string optValue, out string value) {
            if (string.IsNullOrEmpty(optValue)) {
                if (this.ValueRequired){
                    value = string.Empty;
                    return false;
                } else {
                    value = this.Default;
                    return true;
                }
            }

            if (optValue.StartsWith("\"") && optValue.EndsWith("\""))
                value = optValue.Substring(1, optValue.Length - 2);
            else if (optValue.StartsWith("'") && optValue.EndsWith("'"))
                value = optValue.Substring(1, optValue.Length - 2);
            else
                value = optValue;

            return true;
        }
    }
}
